Well.. heres the setup. y7, obd2, 14b@8psi, secondary o2 sim, MSD BTM, BKR7ES-11's (gapped at .34), dsm 450cc black tops, inline resistors, aem fpr @stock fuel pressure (35ish w/vac attached), Walbro 255lph intank pump, settings -50 . I went to a dyno day to figure out why I wasnt pulling after 4k rpms and see what exactly my a/f was doing. The car feels fine out of boost and idles/drives rich but livable. At full throttle the a/f went below 10 and never came back and my car owned the shop with black smoke. I made like 52hp!!! I recently did a tune up so I dont think thats the problem. I know my wiring is right and the afc sensors are picking up very accurate info. It seemed to get worse after gapping my plugs to .35 but it was always way rich like this. I'm about to go obd1 and uberdata'ed, but I'd really like to know why things are so screwey. No CEL except a rich/lean cel that only occurs at Normal granny driving.

Thanks for the help. I need all I can get. Compression btw is from 187-185ish all the way.

 

Bad injector?

 

Its a possibility. But I kinda doubt it since I knew who they came from. And all of them seem to click and pulse.

 

o2 sensors hooked up? what ecu?

 

yeah o2 is hooked up. I even purchased a new one to check. Didnt change. Stock y7 ecu.

 

you sure you cut te map line and not someting else?

 

Positive sir. Infact the afc reads pressure perfectly.

 

using the resisror pack?;lol

 

inline 10watt 10ohm. I've replaced em like 4 times along with clips to make sure they werent the problem.

 

I honestly think its gonna be ignition related. Since its only crazy rich at full throttle. And gapping the plugs seemed to make it worse for some reason. (Got new plugs on the way from clubplug)